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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4478) [Umbrella] : Track all the Test failures in YARN
Date Fri, 22 Apr 2016 18:01:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-4478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15254330#comment-15254330
] 

Allen Wittenauer commented on YARN-4478:
----------------------------------------

Just an FYI, but there are two key problems that folks should be aware of:

#1:

None of the current hadoop jenkins "build project" jobs actually report all of the unit test
failures in a consistent manner due to how maven works.  If a dependent module fails, then
the parent module is never run.  In words:

Given two modules A, B.  Relationship is such that B requires A.  

If A's unit tests succeed, then B's unit tests are executed.

If A's unit tests fail, then B's unit tests are *never run*.

#2

I've already determined that a large chunk of the YARN unit tests CANNOT be run simultaneously
due to TCP port usage.  (See YARN-4950).  This means that if two YARN nightlies are running
on the same box at the same time, it's pretty much a 100% certainty that there will be spurious
failures. (Yetus guarantees some\-\-but not total\-\-isolation via docker, so precommit should
be immune to this particular problem.)

That said, I've been working on a Yetus-based replacement for full compiles (YETUS-156). 
This would at least solve major parts of both these issues. I've been running it in test for
Hadoop for a while now:  (https://builds.apache.org/view/H-L/view/Hadoop/job/hadoop-qbt-test
).  I've had unit tests turned off, but I just kicked off another run with the unit tests
turned on so that you can see what happens.  

> [Umbrella] : Track all the Test failures in YARN
> ------------------------------------------------
>
>                 Key: YARN-4478
>                 URL: https://issues.apache.org/jira/browse/YARN-4478
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>            Reporter: Rohith Sharma K S
>
> Recently many test cases are failing either timed out or new bug fix caused impact. Many
test faiures JIRA are raised and are in progress.
> This is to track all the test failures JIRA's



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